Siemens 6AV6446-1AA41-1AB3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-1AB3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-1AB3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-1AB3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-1AB3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding visualization and operator control tasks in industrial automation environments. This panel features a 12-inch TFT display and is part of the SIMATIC MP 370 series, which provides high-performance human-machine interface functionality for complex process visualization. It is manufactured by Siemens and represents a mid-to-high range panel PC solution within the SIMATIC HMI product line.

The MP 370 panel is equipped with a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA), supporting 256 colors. It operates on a 24 V DC supply and communicates via MPI, PROFIBUS DP, and Ethernet interfaces, enabling integration with a wide range of Siemens SIMATIC PLCs including S7-300 and S7-400 series. The unit supports WinCC flexible runtime software and offers onboard flash memory along with a CompactFlash card slot for extended storage. The panel is rated IP65 at the front face, making it suitable for installation in control cabinet doors exposed to dust and moisture.

The SIMATIC MP 370 is widely used in manufacturing, process automation, automotive production, and machine building industries where complex visualization, recipe management, and data logging are required. Its multi-protocol communication capability and robust construction make it suitable for integration into existing SIMATIC automation architectures. The panel is commonly found in applications such as packaging machinery, conveyor systems, and process control stations where reliable operator interaction is essential.

Technical Specifications

Display Size	12 inch
Display Type	TFT color LCD
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (10/100 Mbit/s)
Memory	Onboard Flash, CompactFlash card slot
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90%, non-condensing
IP/Protection Rating	IP65 (front), IP20 (rear)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC MP 370

Common Error Codes & System Events

Event ID: 1000: System startup error — the panel failed to complete the boot sequence correctly.
Perform a hardware reset. Check the 24 V DC supply voltage and verify the CompactFlash card is properly seated and contains valid firmware.
Event ID: 10000: Communication error to the configured PLC — the HMI cannot establish or maintain a connection to the controller.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify the PLC address and baud rate settings match the HMI project configuration.
Event ID: 10001: PLC connection timeout — the HMI lost communication with the PLC during operation.
Inspect network cabling for damage or loose connectors. Verify PLC is in RUN mode and check for network address conflicts.
Event ID: 20000: Tag read error — a configured variable could not be read from the PLC.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address changes.
Event ID: 40000: Recipe data error — recipe records could not be read from or written to storage.
Check available storage space on the CompactFlash card. Verify recipe configuration in WinCC flexible and reformat the card if file system errors are detected.
Event ID: 70010: Printer communication error — the panel cannot communicate with the configured printer.
Check printer cable connections and verify printer driver settings in the HMI project. Ensure the printer is powered on and online.
Event ID: 110000: Project download error — a project transfer from the engineering PC to the panel was interrupted or failed.
Restart the transfer in WinCC flexible. Ensure the correct communication interface is selected and that no firewall or antivirus software is blocking the connection.

Frequently Asked Questions

Which PLC families are compatible with the SIMATIC MP 370?

The MP 370 is compatible with Siemens SIMATIC S7-300, S7-400, and S7-200 PLCs via MPI or PROFIBUS DP interfaces. Ethernet-based communication with S7 controllers is also supported using the integrated 10/100 Mbit/s Ethernet port.

What software is used to program and configure the MP 370?

The MP 370 is configured using Siemens WinCC flexible engineering software. Projects are created on a PC and transferred to the panel via MPI, PROFIBUS, Ethernet, or a USB/serial connection.

What is the display size and resolution of the 6AV6446-1AA41-1AB3?

This variant features a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports 256 colors.

What is the front panel protection rating of the MP 370?

The front face of the MP 370 is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for mounting in control cabinet doors in industrial environments.

Can the MP 370 be used as a replacement for older SIMATIC OP or TP panels?

Yes, the MP 370 can replace older SIMATIC Operator Panel (OP) and Touch Panel (TP) devices in many applications, provided the WinCC flexible project is adapted to the new hardware configuration and communication settings are updated accordingly.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the rear connector. Check if the power LED is illuminated. Attempt a hardware reset by pressing the reset button.

If supply voltage is correct but the display remains blank, the internal power supply board or the backlight inverter may have failed. Replace the backlight or have the unit repaired by a qualified service technician.

Touchscreen does not respond or responds inaccurately

Check if the touch input is enabled in the WinCC flexible project settings. Attempt to recalibrate the touchscreen via the panel's Control Panel menu accessible during startup.

Perform a touchscreen recalibration from the SIMATIC HMI Control Panel. If the issue persists, the resistive touch overlay may be damaged and requires replacement.

Panel cannot establish communication with the PLC

Verify MPI or PROFIBUS DP cable connections, termination resistors, and that the PLC address configured in the HMI project matches the actual PLC station address. Check baud rate settings on both devices.

Correct any address or baud rate mismatches in the WinCC flexible project and reload the project to the panel. Replace damaged cables or connectors and ensure proper bus termination at both ends of the network.

Panel repeatedly restarts or crashes during operation

Check the 24 V DC supply for voltage fluctuations or ripple using an oscilloscope. Inspect the CompactFlash card for errors by reading it on a PC.

Stabilize the power supply and replace the CompactFlash card if file system errors are found. Reload the WinCC flexible project and update the panel firmware to the latest compatible version.

Project transfer from PC to panel fails

Verify the communication interface selected in WinCC flexible matches the physical connection used (MPI, Ethernet, etc.). Check that the panel is in Transfer mode and that the PC firewall is not blocking the connection.

Set the panel to Transfer mode via the Control Panel or by pressing the appropriate key during startup. Disable any firewall or antivirus software temporarily during transfer and ensure the correct COM port or IP address is configured in WinCC flexible.

Condition	Repair, Used, Refurbished, New in box (sealed)